Hi, GiNaC 1.8.1 has just been tagged. Here's what's new: * Add method relational::canonical() and improve conversion of relational to Boolean (it now works on many simple symbolic cases). * Improve normalization of negative exponents. * Fix indexing multiply referenced objects with ex::operator[]. * Make functions evalf() their arguments before doing own evalf(). * Fix bugs in H_evalf() and in evaluation of iterated integrals. * Several portability improvements and compiler warning fixes. If you aren't vaccinated, consider getting, and keep hacking! -richy. -- Richard B. Kreckel <https://in.terlu.de/~kreckel/>